What is the MAIN difference between primary and secondary succession? A. Primary succession is when there is no soil, and secondary succession is when there is a major change to the community

B. Primary succession involves breaking down rock, and secondary succession involves only the movement of animals to the area

C. Primary succession usually happens after a fire, and secondary succession happens after a flood

the answer is B because primary is when de breaking of rocks n secondary about the area

Explanation:

B

A. Primary succession is when there is no soil, and secondary succession is when there is a major change to the community

Explanation:

Primary succession begins on rock formations or in a place with no organisms or soil. Secondary succession occurs when floods, hurricanes, fires, and tornadoes destroy the community and then the ecological community undergoes a change to rebuild itself

substitution is the answer in this case

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.